l8 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 6l 



Epimys Annus the average excess of tail over head and body is 14.6 

 mm., while in only one does the head and body decidedly exceed the 

 tail (10 mm.). 



EPIMYS VALENS, new species 



Type. — Adnlt female (skin and skull), No. 1 14285, United States 

 National Museum. Collected on Pulo Bangkaru, Banjak Islands, 

 January 19, 1902, by Dr. W. L. Abbott. Original No. 1430. 



Diagnosis. — Like Epimys potens of Pulo Tuangku but tail de- 

 cidedly shorter than head and body, skull with noticeably shortened 

 incisive foramina, and teeth more nearly as large as in E. Urmus. 



Measurements. — Type : head and body, 232 mm. ; tail, 203 ; hind 

 foot (dry), 34.5 (32) ; condylobasal length of skull (teeth moder- 

 ately worn), 48.8 ; zygomatic breadth, 25.1 ; interorbital constriction, 

 y.T,: occipital breadth, 18.8; depth of braincase, 13.2; nasal, 21.2; 

 diastema, 14.7; length of incisive foramina, 7.9; mandible, 32.5; 

 maxillary toothrow (alveoli), 8.7; mandibular toothrow (alveoli), 

 9.0. 



Specimens examined. — Six, all from Pulo Bangkaru. 



Remarks. — In all of the specimens the tail is shorter than head 

 and body, the average difference 22 mm. The color of the back and 

 sides in the skins of Epimys valens and in those of E. potens is more 

 yellowish than in the series of E. firmus. They are, however, in 

 fresher coat, so that the difference may be purely seasonal. 



EPIMYS LUTA, new species 



191 1. Epimys sabanus Lyon, Proc. U. S. Nat. Mus., vol. 40, p. 104. April 25, 

 iqii. (Part.) 



Type. — Adult female (skin and skull), No. 151917, United States 

 National Museum. Collected on Pulo Laut, Dutch Southeast Bor- 

 neo, December 24, 1907, by Dr. W. L. Abbott. Original No. 5682. 



Diagnosis. — A member of the sabanus-vociferans group much 

 smaller than Epimys sabanus or than any of the forms of E. vocif- 

 erans except E. vociferans stridulus. Differs from E. vociferans 

 stridulus in darker ground color of back and sides (about ochraceous- 

 tawny instead of about pale-ochraceous-buff ) , paler underparts 

 (buffy white instead of cream-buff), and less robust skull with con- 

 spicuously weaker anterior base of zygoma, narrower antorbital 

 plate, and longer incisive foramina. 



Measurements. — Head and body, 210 mm.; tail, 290; hind foot 

 (dry), 42.5 (41) ; condylobasal length of skull (teeth moderately 

 worn), 45.8; greatest length, 50.2; zygomatic breadth, 22.9; inter- 



